Unusual event detection in wide-angle video (based on moving object trajectories)
US8284258B1 · kind B1 · utility
91Cited by
15References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 18, 2009 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Jun 25, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/44
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Object images captured by a wide-angle camera are distorted due to the optical effects of the wide-angle lens. The disclosed innovations allow an automatic analysis on the corrected image distinguishing normal movement from an unusual event movement. The analysis is based on Markov Modeling on moving object trajectories and motion angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.